Leviticus 23:40-43

⁴⁰and ye have taken to yourselves on the first day the fruit of beautiful trees, branches of palms, and boughs of thick trees, and willows of a brook, and have rejoiced before Jehovah your God seven days.

⁴¹'And ye have kept it a feast to Jehovah, seven days in a year — a statute age-during to your generations; in the seventh month ye keep it a feast.

⁴²'In booths ye dwell seven days; all who are natives in Israel dwell in booths,

⁴³so that your generations do know that in booths I caused the sons of Israel to dwell; in my bringing them out of the land of Egypt; I, Jehovah, am your God.'